Wireless Door Lock Authentication via Signal Strength and Touch
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Solution Overview
Problem
Existing access control systems for doors lack efficiency in switching between locked and unlocked positions, often requiring manual intervention and delayed authentication processes, which can lead to inconvenience and security risks.
Innovation Solution
A wireless access control system that includes a lock assembly with wireless communications circuitry, a door position determining device, a touch sensor, and a remote access device, allowing for automatic authentication and instantaneous switching between locked and unlocked positions based on user interaction and signal strength analysis.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of operation
If manual key insertion and turning is used, then the lock is simple and reliable, but user convenience is poor and time consumption is high
Solution Approach 1:
The patent replaces the traditional mechanical key insertion and turning system with a wireless access control system that uses RFID/NFC technology. The lock assembly includes wireless communications circuitry that communicates with a remote access device, eliminating the need for physical key manipulation while maintaining secure locking functionality.
Solution Approach 2:
The system enables automatic door unlocking without requiring manual button pressing or user input. The remote access device automatically authenticates the user and sends unlock commands wirelessly to the lock assembly, making the access process passive and convenient for the user.
2Reliability
If authentication is performed after door opening, then the lock is simple to operate, but security is compromised and time is lost
Solution Approach 1:
The system performs authentication before the door opening action. The lock controller authenticates the remote access device via wireless communication before sending the unlock command, ensuring security is verified in advance rather than after potential security risks arise.
Solution Approach 2:
The lock controller continuously monitors door position through the door position determining device and uses this feedback to control the locking mechanism. The system tracks door opening and closing patterns to determine when authentication should occur and when the lock should be engaged, creating a responsive security system.
3Productivity
If the lock switches slowly between positions, then the mechanism is simple and reliable, but productivity is reduced and time is lost
Solution Approach 1:
The lock controller dynamically adjusts the locking mechanism operation based on authentication status and door position. The system can rapidly switch the lock between locked and unlocked positions when authentication is successful, while maintaining simple mechanical operation through controlled actuator activation.
4Measurement precision
If directional antennas are used for signal strength analysis, then authentication accuracy is improved, but device complexity increases
Solution Approach 1:
The lock assembly includes directional antennas with different orientations (interior and exterior directional antennas) to detect signal strength from specific directions. This allows the system to determine the relative position of the remote access device and authenticate users based on their spatial location, improving security without requiring complex processing.
Data Source
AI summary
A wireless access control system for a door may include a lock assembly carried by the door. The lock assembly may include a lock, lock wireless communications circuitry, a door position determining device, a touch sensor to sense touching by a user, and a lock controller. A remote access device may be remote from the lock assembly and may to communicate with the lock wireless communications circuitry. The lock controller may be configured to determine when the door is moved in a pattern based upon the door position determining device, perform an authentication of the remote access device based upon determining the door being moved in the pattern, and switch the lock from the unlocked position to the locked position based upon the authentication and the user touching the touch sensor.